Overview

Simple blocks for building. Some blocks include holes for other blocks to fit into. Great for building towers, castles, neighborhoods, or whatever else your children can imagine. My children also use them as falling dominoes.

Recommended ages ~2-7. For 2 year olds the smallest piece may not pass the choke hazard test for toy's for kids under 3, but its pretty close. All the other blocks should be fine for under 3. As kids get older building more challenging things can keep them fun, like building bridges. I also printed some with more infill/perimeters to have “heavy” blocks. 

Its a good way to test filaments and settings, create swatches, and get some durability testing.

Specs

• A “unit” is 25mm
• Holes are given 1 mm of extra clearance so blocks can fit in easily. 
• All edges contain a 2.5mm chamfer

Variants

If you just want building blocks I suggest just sticking with the original blocks. I did experiment with some more complex designs so these blocks could be used in other ways, but for building the original blocks still work best. 

Marble Variant

I experimented with making these blocks into a marble run. The blocks move around a lot as you build so its not a great marble run, but my kids do enjoy using them with marbles so I figured I'd include them. 

Locking Variant

Another experiment, where included the chamfer on the faces, spaced each "unit". This allows them to be built on a base plate that doesn't move around. I never found a good solution for locking in higher levels though. And the chamfer makes the blocks use more plastic and print slower. It does help with the sliding problem with the marble variants, but its was still difficult to create longer tracks.